tamerlan tsarnaev was married and had a baby. the family of his wife said today they were "sickened" by the horror he inflicted. as we learn more about the brothers, it appears as though tamerlan underwent a significant change some time between 2009 and 2010. er 2009, tamerlan tsarnaev was tingsted for assaulting his girlfriend and then was interviewed by the f.b.i. at the request of the russian government, concerned he might be a security threat. around this time, his uncle became concerned. >> it was a different tamerlan-- see no purpose in life but a pursue path of god. >> reporter: ruslan tsarni says it was a path that led ifecifically toward a strict interpretation of islam. >> i ask, "what is the path?" he would say, "it's one of jihad." "okay, do you know translation of word 'jihad'?" >> axelrod: tsrani says tamerlan had a negative influence on his younger brother, dzhokar. >> the older brother involved him. his brother was not really his brother. he used him. he used him. >> axelrod: cbs news national security analyst jua